Display screen or portion thereof with transitional icon



A portion of the disclosure of this patent document contains material to which a claim for copyright is made. The copyright owner has no objection to the reproduction of the patent document or the patent disclosure, as it appears in the U.S. Patent Office records, but reserves all other copyright rights whatsoever.

FIG. 1 is a front view of a transitional image for a display screen or portion thereof of a graphical user interface, showing the new design; and,

FIG. 2 is a front view of a second image thereof.

Further, the broken lines in the drawings showing a display screen or portion thereof, as well as the broken lines depicting lettering (shown in reverse broken lines), illustrate environmental subject matter and do not form any part of the claimed design. 

CLAIM We claim the ornamental design for a display screen or portion thereof with transitional icon, as shown and described. 